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<div class="title">tcp.h</div>  </div>
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<a href="tcp_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="preprocessor">#include &lt;netinet/in.h&gt;</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="preprocessor">#include &lt;sys/types.h&gt;</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="preprocessor">#include &lt;unistd.h&gt;</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="preprocessor">#include &lt;netdb.h&gt;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#include &lt;signal.h&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &lt;sys/wait.h&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno"><a class="line" href="tcp_8h.html#a0128d1b0dc57cbb75797eab9e1e50280">   12</a></span>&#160;<span class="preprocessor">#define SERVER_QLEN 1</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment">/******************************************************</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment">Utilities to create a simple, low-level inter-process communication</span></div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="comment">system between machines over a TCP/IP network</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="comment"> *****************************************************/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="comment">//create a server listening on port. Caller specifies an handler for</span></div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="comment">//the estabilished connection.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keywordtype">int</span> <a class="code" href="tcp_8h.html#a2171d99433726e32e225b955e6f9cf37">makeserverh</a>(uint16_t port, <span class="keywordtype">int</span> (* handler)(<span class="keywordtype">int</span> socket_des));</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">//simple forking server: no handler</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="keywordtype">int</span> <a class="code" href="tcp_8h.html#af90d1d8229d310a8db3d7f4fd5dc3533">makeserver</a>(uint16_t port);</div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;</div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment">//create a client connecting to address:port. Returns a socket descriptor</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keywordtype">int</span> <a class="code" href="tcp_8h.html#ad8bec41b622c045b5ee08ed777a0e9d9">makeclient</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> * address, uint16_t port);</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="comment">//read data from socket descriptor</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="comment">//put data on socket descriptor</span></div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="comment">//create a server socket and bind to port, exits on failure.</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="keywordtype">int</span> <a class="code" href="tcp_8h.html#ad79c8b2efdf636a561906f404b1d5726">make_socket</a> (uint16_t port);</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="comment">//initialize an address data structure (sockaddr_in) to be used in</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="comment">//a client connection</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keywordtype">void</span> <a class="code" href="tcp_8h.html#a32f3fa9fdedb53f8ff6ac639ce74650b">init_sockaddr</a> (<span class="keyword">struct</span> sockaddr_in * address,</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">char</span> * hostname,</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;            uint16_t port);</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="comment">//SIGCHLD handler</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keywordtype">void</span> <a class="code" href="tcp_8h.html#af7ed50414fc8a6d6e37342e811411e37">sigchld_handler</a> (<span class="keywordtype">int</span> signum);</div>
<div class="ttc" id="tcp_8h_html_a2171d99433726e32e225b955e6f9cf37"><div class="ttname"><a href="tcp_8h.html#a2171d99433726e32e225b955e6f9cf37">makeserverh</a></div><div class="ttdeci">int makeserverh(uint16_t port, int(*handler)(int socket_des))</div></div>
<div class="ttc" id="tcp_8h_html_af7ed50414fc8a6d6e37342e811411e37"><div class="ttname"><a href="tcp_8h.html#af7ed50414fc8a6d6e37342e811411e37">sigchld_handler</a></div><div class="ttdeci">void sigchld_handler(int signum)</div><div class="ttdef"><b>Definition:</b> <a href="tcpserver_8c_source.html#l00009">tcpserver.c:9</a></div></div>
<div class="ttc" id="tcp_8h_html_af90d1d8229d310a8db3d7f4fd5dc3533"><div class="ttname"><a href="tcp_8h.html#af90d1d8229d310a8db3d7f4fd5dc3533">makeserver</a></div><div class="ttdeci">int makeserver(uint16_t port)</div><div class="ttdef"><b>Definition:</b> <a href="tcpserver_8c_source.html#l00017">tcpserver.c:17</a></div></div>
<div class="ttc" id="tcp_8h_html_ad8bec41b622c045b5ee08ed777a0e9d9"><div class="ttname"><a href="tcp_8h.html#ad8bec41b622c045b5ee08ed777a0e9d9">makeclient</a></div><div class="ttdeci">int makeclient(const char *address, uint16_t port)</div><div class="ttdef"><b>Definition:</b> <a href="tcpclient_8c_source.html#l00008">tcpclient.c:8</a></div></div>
<div class="ttc" id="tcp_8h_html_a32f3fa9fdedb53f8ff6ac639ce74650b"><div class="ttname"><a href="tcp_8h.html#a32f3fa9fdedb53f8ff6ac639ce74650b">init_sockaddr</a></div><div class="ttdeci">void init_sockaddr(struct sockaddr_in *address, const char *hostname, uint16_t port)</div><div class="ttdef"><b>Definition:</b> <a href="server_8c_source.html#l00100">server.c:100</a></div></div>
<div class="ttc" id="tcp_8h_html_ad79c8b2efdf636a561906f404b1d5726"><div class="ttname"><a href="tcp_8h.html#ad79c8b2efdf636a561906f404b1d5726">make_socket</a></div><div class="ttdeci">int make_socket(uint16_t port)</div><div class="ttdef"><b>Definition:</b> <a href="server_8c_source.html#l00078">server.c:78</a></div></div>
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